Repositories list

• core

  Public
  Collection of OCR-related python tools and wrappers from @OCR-D

  ocr-d

  ocr-d

  Python

  •

  Apache License 2.0

  •32•133•114•15•Updated Feb 4, 2026Feb 4, 2026

• page-to-alto

  Public
  Convert PAGE (v. 2019) to ALTO (v. 2.0 - 4.2)

  ocr-d

  ocr-d

  Python

  •

  Apache License 2.0

  •5•15•9•1•Updated Jan 20, 2026Jan 20, 2026

• ocrd-website

  Public
  HTML

  •

  Creative Commons Attribution 4.0 International

  •7•24•16•1•Updated Jan 14, 2026Jan 14, 2026

• ocr-d.github.io

  Public
  Website for OCR-D specs, formats, requirements

  ocr-d

  ocr-d

  HTML

  •2•5•0•0•Updated Jan 14, 2026Jan 14, 2026

• OCR-D-GT-VD-SBB

  Public
  A ground truth (GT) dataset created within the OCR-D project and consisting of 348 pages extracted from historical documents pertaining to the "Verzeichnis der …

  Shell

  •

  Creative Commons Attribution Share Alike 4.0 International

  •0•0•0•0•Updated Nov 26, 2025Nov 26, 2025

• ocrd_segment

  Public
  OCR-D-compliant page segmentation

  ocr-d

  ocr-d

  Python

  •

  MIT License

  •16•68•11•1•Updated Nov 19, 2025Nov 19, 2025

• keyboardGT

  Public
  Offer of different keyboards for transcription software (Aletheia, Transkribus, LAREX, QURATOR-neat, eScriptorium)

  ocrkeyboard-layouttranscription+ 6

  ocrkeyboard-layouttranscriptionground-truthaletheiatranskribusescriptoriumlarexqurator-neat

  XSLT

  •

  Creative Commons Attribution Share Alike 4.0 International

  •1•1•0•0•Updated Nov 5, 2025Nov 5, 2025

• ocrd_pagetopdf

  Public
  OCR-D wrapper for prima-pagetopdf

  ocrocr-dprima-pagetopdf

  ocrocr-dprima-pagetopdf

  Python

  •

  Apache License 2.0

  •7•9•3•0•Updated Oct 30, 2025Oct 30, 2025

• spec

  Public
  Specification of the @OCR-D technical architecture, interface definitions and data exchange format(s)

  ocr-d

  ocr-d

  Python

  •5•17•42•6•Updated Sep 18, 2025Sep 18, 2025

• ocrd_keraslm

  Public
  Simple character-based language model using keras

  ocr-d

  ocr-d

  Python

  •

  Apache License 2.0

  •6•7•1•0•Updated Aug 12, 2025Aug 12, 2025

• ocrd_kraken

  Public
  Wrapper for the kraken OCR engine

  ocr-d

  ocr-d

  Python

  •

  Apache License 2.0

  •6•12•4•1•Updated Jul 12, 2025Jul 12, 2025

• ocrd_all

  Public
  Master repository which includes most other OCR-D repositories as submodules

  ocr-d

  ocr-d

  Makefile

  •

  MIT License

  •19•72•23•4•Updated Jul 4, 2025Jul 4, 2025

• assets

  Public
  Test data for testing specs and software in @OCR-D

  ocr-d

  ocr-d

  Makefile

  •9•5•20•7•Updated May 20, 2025May 20, 2025

• ocrd_fileformat

  Public
  OCR-D wrapper for ocr-fileformat

  ocr-d

  ocr-d

  Python

  •

  Apache License 2.0

  •3•6•7•1•Updated May 20, 2025May 20, 2025

• ocrd_calamari

  Public
  Recognize text using Calamari OCR and the OCR-D framework

  ocrocr-dcalamari-ocr

  ocrocr-dcalamari-ocr

  Python

  •

  GNU General Public License v3.0

  •6•15•18•1•Updated May 13, 2025May 13, 2025

• dinglehopper

  Public
  An OCR evaluation tool

  Python

  •

  Apache License 2.0

  •17•1•0•0•Updated May 7, 2025May 7, 2025

• ocrd_froc

  Public
  Python

  •

  Apache License 2.0

  •2•8•6•0•Updated May 6, 2025May 6, 2025

• ocrd_olahd_client

  Public
  ocr-d

  ocr-d

  Python

  •

  Apache License 2.0

  •2•1•1•0•Updated May 6, 2025May 6, 2025

• ocrd_anybaseocr

  Public
  DFKI Layout Detection for OCR-D

  ocrocr-docr-d-mp

  ocrocr-docr-d-mp

  PureBasic

  •

  Apache License 2.0

  •11•47•19•1•Updated May 1, 2025May 1, 2025

• ocrd_olena

  Public
  Binarize with Olena/scribo

  ocr-d

  ocr-d

  Python

  •

  GNU General Public License v2.0

  •8•7•2•0•Updated May 1, 2025May 1, 2025

• ocrd_tesserocr

  Public
  Run tesseract with the tesserocr bindings with @OCR-D's interfaces

  ocr-d

  ocr-d

  Python

  •

  MIT License

  •11•39•12•6•Updated Apr 30, 2025Apr 30, 2025

• format-converters

  Public
  Converters for various file formats used for representing OCR

  ocr-d

  ocr-d

  XSLT

  •

  Apache License 2.0

  •7•12•1•2•Updated Apr 30, 2025Apr 30, 2025

• gt_structure_text

  Public
  The OCR-D Ground Truth text and structure corpus was created between 2015 -2017. In the years since 2017, this corpus has been further curated and supplemented …

  Creative Commons Attribution Share Alike 4.0 International

  •3•5•2•0•Updated Mar 25, 2025Mar 25, 2025

• quiver-frontend

  Public
  Vue

  •

  Apache License 2.0

  •1•0•21•3•Updated Oct 22, 2024Oct 22, 2024

• ocr-fileformat

  Public
  Validate and transform various OCR file formats (hOCR, ALTO, PAGE, FineReader)

  JavaScript

  •

  MIT License

  •24•1•0•0•Updated Oct 11, 2024Oct 11, 2024

• ocrd_im6convert

  Public
  Run ImageMagick with an OCR-D CLI

  ocr-d

  ocr-d

  Shell

  •

  Apache License 2.0

  •3•5•2•0•Updated Oct 1, 2024Oct 1, 2024

• quiver-mongoapi-local

  Public
  Middleware for running Quiver locally

  Python

  •0•0•0•0•Updated Sep 24, 2024Sep 24, 2024

• quiver-benchmarks

  Public
  Benchmarking OCR-D workflows in Docker

  HTML

  •

  MIT License

  •1•2•8•2•Updated Sep 20, 2024Sep 20, 2024

• gt_structure_all

  Public
  Python

  •

  Creative Commons Zero v1.0 Universal

  •1•4•0•1•Updated Jun 24, 2024Jun 24, 2024

• gt_structure_5_3

  Public
  The repo gt_structure_5_3 is part of the OCR-D Ground Truth Structure corpus. Only the structure of the printed page is annotated. The corpus was created as a r…

  Creative Commons Zero v1.0 Universal

  •1•0•0•1•Updated Jun 24, 2024Jun 24, 2024